12V Portable Battery Spot Welder Set – DIY Mini Spot Welding Machine Kit for 18650 Lithium Battery Packs in Pakistan

Overview

When constructing custom lithium-ion battery packs, power banks, or electric vehicle energy storage modules, soldering wires directly to battery terminals can overheat and permanently damage the cells. The 12V Portable Battery Spot Welder Set provides a professional, efficient solution by delivering high-current spot welds that securely bond nickel strips to cylindrical cells in milliseconds. Powered by a 12V source (such as a car battery or a 3S-4S high-discharge LiPo pack), this compact kit features adjustable power settings and heavy-duty welding pens for precise, clean welds every time.

Key Features

• Microprocessor-Controlled Precision: Offers adjustable power output settings, allowing you to fine-tune the welding pulse for different thicknesses of nickel strip.

• Heavy-Duty Welding Pens: Comes equipped with low-resistance, high-temperature silicone wire and solid copper tips for optimal current delivery.

• Portable & Compact Design: Lightweight control board makes it easy to integrate into a portable benchtop battery assembly station.

• Safe & Spark-Controlled: Rapid switching Mosfets ensure clean contact breaks, minimizing sparking and ensuring strong metallurgical bonds.

Technical Specifications

Common Applications

• 18650 / 21700 Battery Pack Assembly: Essential tool for building custom power banks, e-bike batteries, and cordless drill pack rebuilds.

• DIY Solar Energy Banks: Interconnect high-capacity cells securely for off-grid power projects.

• Robotics & RC Power Systems: Fabricate custom high-current battery configurations tailored to specific robot chassis.

• Note to customers: Requires a high-discharge 12V power source (like a car battery or 3S/4S LiPo) to supply the massive surge current needed for spot welding; standard bench power supplies will not work!